// Get Programming with JavaScript

// Listing 18.02

// My Movie Ratings greetings with button

​

(function () {

  "use strict";

  function getGreeting () {

    var hellos = [

      "Nanu nanu!",

      "Wassup!",

      "Yo!",

      "Hello movie lover!",

      "Ay up me duck!",

      "Hola!"

    ];

    var index = Math.floor(Math.random() * hellos.length);

    return hellos[index];

  }

  function updateGreeting () {

    para.innerHTML = getGreeting();

  }

  var btn = document.getElementById("btnGreeting");

  var para = document.getElementById("greeting");

  btn.addEventListener("click", updateGreeting);

  updateGreeting();

})();

​

​

/* Further Adventures

 *

 * 1) Run the program and click the

 *    button a few times.

 *

 * 2) Add a second button to the HTML

 *    with the caption "Say Bye"

 *

 * 3) Add a getBye function to the code

 *    that returns a random goodbye message.

 *

 * 4) Add an updateBye function and make it

 *    so that clicking your button displays

 *    the message on the web page.

 *

 */

​

​